A New Hybrid Diffie-Hellman and Caesar Cipher Algorithm for Cryptography

Abstract

Caesar cipher algorithm is one of the ancient algorithms. However, due to advances in technology the algorithm is now much simple to breach. This is because; each letter in the message is replaced by the same letter as specified. To raise the safety, some changes can be made. So, here we are going to use another arithmetic algorithm Diffie - Hellman's mode of changing the key to find the secret key and use simple calculations to verify data encryption. After obtaining a private shared key using the Diffie-Hellman method, depending on the operating mode with 26 keys to get the value of 26 or less, then the current character is taken with the key when the additional value of the new character. In any letter in the position of an 'x', the key first increases with an 'x' and is adjusted to get the encrypted letter. Therefore, 2 messages are repeated 2 times and the third letter has 3. This increases safety. This technology can be